2010年末，北非的「茉莉花革命」運用社群媒體組織社會抗爭震驚國際，令社群媒體的政治力量引發關注。本論文轉而利用社群媒體的微博，將「思想」、「微博」與「社會秩序」三者關係的互動作為理解中共的管理方針、分析當代中國大陸的社會現象。經由研究發現，中共以「九條紅線」基本原則管理微博的熱門話題，但微博主流的熱門話題卻是在討論社會問題。有關政治、災害的議題會受到中共嚴密的管理，其餘大部分的話題均呈現出網民言論的多樣性，表示中共容許網民一定程度的宣洩與表態。據此看來，「九條紅線」下的網路言論自由是一種有限的多元，同時提供中共作為決策的參考；而「九條紅線」明確劃出網民不得逾越的界線，使得微博輿論適時地穩定中共的政權。 This paper transforms Gramsci’s “Culture Hegemony” into “thought,”“microblogging,” and “social order,” I try to understand CCP’s actual internet regulation, and analyzed social phenomenon in contemporary mainland China. CCP proclaims the nine forbidden types of content to prevent netizens from damaging the society security and interests of the state: (1) Content that is against the basic principles determined by the constitution; (2) Content that impairs national security, divulges state secrets, subverts state sovereignty or jeopardizes national unity; (3) Content that damages the reputation and interests of the state; (4) Content that incites ethnic hostility and ethnic discrimination or jeopardizes unity among ethnic groups; (5) Content that damages state religious policies or that advocates sects or feudal superstitions; (6) Content that disseminates rumors, disturbs the social order or damages social stability; (7) Content that disseminates obscenity, pornography, gambling, violence, homicide and terror, or incites crime; (8) Content that insults or slanders others or that infringes their legal rights and interests; and (9) Other content prohibited by laws or administrative regulations. China’s biggest microblogging service has also introduced a code of explicitly restricting the type of messages that can be posted. In fact, the hot topic on microblogging today is always discussing about social problem, not about politics. CCP will regulate the discussion of hot topic of politics and disasters strictly, and the rest of hot topic, CCP allows people to vent their emotions. In mainland China, public opinion on internet under the nine forbidden types of content is limited diversification, and that forbidden types of messages also stabilize CCP’s regime.